SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '911ff235bed9df618b5468b31ac02880c31ca1e0c952a7b918b8c76f3086ea81' 
  AND token = 'zhGRzbJIuAGgHgmOLzjNjoA3fKAEnqlgUeqp/T5BIDs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}